![]() The bank identification number: The first six digits are the bank identification number (BIN) or issuer identification number (IIN) to identify the issuer of the card.Autonomy of a Credit Card Number: 3 Parts to KnowĪ credit card number, for example: 1234567812345678, consists of 3 parts: We thought some clarification was needed so we will describe below what a PAN number is made of, what BIN ranges refer to, and how you can work out a Luhn check (also know as MOD10) and validate a credit card using pen and paper. ![]() ![]() When it comes to the anatomy of a credit card, we often get the same questions regarding the length of a PAN number, BIN ranges, and Luhn checks when dealing with cardholder data discovery projects.
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